4" Dirt late model rules

Motor

Stock Legal motors

Chinese S16d, Pro Slot 4002fk, JK Hawk 7, Mid America Eagle

May change springs & brushes

Chassis
Any approved 4 inch flexi stamp steel chassis.
Aluminum pans are allowed.
1/8 or 3/32 solid steel rear axle
Any pitch straight or angle pinion & any pitch plastic spur gear
May run any height guide flag, shims, nut and approved braids.

.047 tech tool must clear gear, and rear of chassis.
Axle bushing holes may be altered in chassis to lower or raise bushings. Bushing may be soldered in.
No bearings allowed.
No excessive chassis contact to the race track.

 Tires
Any rear tires, no minimum size, as long as minimum chassis height is maintained.
Tires may be changed but must pass tech tool height .047& width 83mm (3.268”) when changed, even during the race and approved by Race Director
Rear tire width must pass tech tool 83mm (3.268”) at all times before, during & after race.

 Body
Must be 4 ½” Dirt Late Model body manufactured by JK, Parma, RTR or RM & approved by Race Director
Must be painted with numbers
Must have 1/16(.062) front bumper
Rear bumper area may be cut out , but leave full spoiler
Rear spoiler height is max 1 ¾ (1.750)
Rear quarter panel may be cut on same angle as rear spoiler to the tire opening
Body proofing or tape may be used, no outer aerodynamic improvements allowed
No heating, pinching or reforming bodies for aerodynamics
No cutting out windows or open holes in car body
Body must be mounted as intended by manufacturer to look like real race cars